For a cargo jet, of course, the key is matching the dimensions ... The BelugaXL freighter is another iconic model of this type, so named for its beluga whale-esque nose and front end.
but would actually have twin-jet performance, especially if it used a more powerful engine like the Trent 1000 or GE9X. Plus, with the recent news that Airbus had been pushing for the Beluga ...